I don't know if this is under the right category but, anytime I try to install an OS, it either installs and goes to a black screen or it won't install at all. It's happened with Ubuntu, Bodhi, Windows 7, Windows 8.1, and Zorin. It started off just being slow when I put Ubuntu 14.04 on it, and then got worse when I took it off and put Windows 7 and it's all just gone downhill from there. Now, no OS will work. It's a Lenovo g570.